Reddit's trying out something new: it's launched its own, original mini-series of web videos. Bases on its Explain Like I'm Five subreddit, it explores political and social issues in a way anyone can understand.

There's little action, no sound, and the footage is grainy. But this brief clip may be the only existing video of writer Mark Twain and his daughters Clara and Jean. It was captured in 1909 by inventor Thomas Edison.